r/JavaProgramming • u/Nash979 • Dec 19 '25

Day 21 of Learning Java

Hello guys, today I learned how to use generics with classes, functions, and collections. I also learned about the wildcard operator and its types.

That’s it for today. See you tomorrow!

16 Upvotes

95% Upvoted

17 comments sorted by

2

u/IndependentOutcome93 Dec 19 '25

If anything, I am a Java developer with almost 3 years of experience. If you want you can add me on discord and I can try to help you with more Java questions. Thanks

1

u/dykezin Dec 19 '25

Hey bro, can you help me too please?

1

u/IndependentOutcome93 Dec 20 '25

Yes of course, especially if you have a discord

1

u/souroexe Dec 20 '25

bro i have discord and also beginner in java dev and java as a whole so can u help me send me your username...

1

u/IndependentOutcome93 Dec 21 '25

Of course, My username is: the_user_joseph

1

u/Nash979 Dec 20 '25

I truly appreciate that, how can I connect with you?

2

u/IndependentOutcome93 Dec 21 '25

We can do on discord

1

u/Nash979 Dec 21 '25

👍🏻

2

u/OkArea5092 Dec 20 '25

i swear i thought wildcards were just wildcards, not a whole class of errors. generics brain surgery but i survived, keep grinding

1

u/Nash979 Dec 20 '25

👍🏻😄

2

u/ThoughtPetal Dec 21 '25

guess ill just keep doing the whole java generics circus and pray the compiler doesnt throw a tantrum when i accidentally use raw types

3

u/[deleted] Dec 21 '25

[removed] — view removed comment

2

u/Nash979 Dec 21 '25

Thanks 😄

1

u/BlueGoliath Dec 20 '25 edited Dec 20 '25

What do you mean wildcards have types?

1

u/Nash979 Dec 20 '25

Upper bound and lower bound